Asymmetrical excitation of surface plasmon polaritons on blazed gratings at normal incidence

نویسندگان

  • Benfeng Bai
  • Xiangfeng Meng
  • Janne Laukkanen
  • Tristan Sfez
  • Libo Yu
  • Wataru Nakagawa
  • Hans Peter Herzig
  • Lifeng Li
  • Jari Turunen
چکیده

Benfeng Bai,1,* Xiangfeng Meng,1,2 Janne Laukkanen,1 Tristan Sfez,3 Libo Yu,3 Wataru Nakagawa,4 Hans Peter Herzig,3 Lifeng Li,2 and Jari Turunen1 1Department of Physics and Mathematics, University of Joensuu, P.O. Box 111, FI-80101 Joensuu, Finland 2Department of Precision Instruments, Tsinghua University, Beijing 100084, China 3Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT-OPT), Breguet 2, 2000 Neuchâtel, Switzerland 4Department of Electrical and Computer Engineering, Montana State University, P.O. Box 173780, Bozeman, Montana 59717-3780, USA Received 20 April 2009; revised manuscript received 12 June 2009; published 9 July 2009

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Local and anisotropic excitation of surface plasmon polaritons by semiconductor nanowires.

We demonstrate a novel functionality of semiconductor nanowires as local sources for surface plasmon polaritons (SPPs). Photoexcited semiconductor nanowires decay non-radiatively exciting SPPs when they are on top of a metallic surface. We have investigated the anisotropic excitation of SPPs by nanowires by placing individual InP nanowires inside gold bullseye gratings. The gratings serve to co...

متن کامل

Surface plasmon interference excited by tightly focused laser beams.

We show that interfering surface plasmon polaritons can be excited with a focused laser beam at normal incidence to a plane metal film. No protrusions or holes are needed in this excitation scheme. Depending on the axial position of the focus, the intensity distribution on the metal surface is either dominated by interferences between counterpropagating plasmons or by a two-lobe pattern charact...

متن کامل

Surface plasmon polaritons locally excited on the ridges of metallic gratings.

With the perspective to achieve an in-depth understanding of metallic periodic surfaces, we study the surface plasmon polaritons that are locally excited on the ridges (between the indentations) of metallic lamellar gratings composed of slits or grooves. An approximate model and fully vectorial computational results show that the normalized excitation rate is rather small for slit arrays (appro...

متن کامل

Near-field Moiré effect mediated by surface plasmon polariton excitation.

We have demonstrated a surface plasmon polariton mediated optical Moiré effect by inserting a silver slab between two subwavelength gratings. Enhancement of the evanescent fields by the surface plasmon excitations on the silver slab leads to a remarkable contrast improvement in the Moiré fringes from two subwavelength gratings. Numerical calculations, which agree very well with the experimental...

متن کامل

Unidirectional excitation of surface plasmons by slanted gratings.

Surface plasmon excitation by normally incident light on surface-relief metallic diffraction gratings is studied numerically. Predominantly unidirectional excitation is achieved with a grating of either a slanted lamellar or an inclined sinusoidal groove profile, both having shallow depths. Maps of Poynting vector illustrate that the energy flow turns from normal incidence in the far-field regi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009